胤いん裔えいいんえいじ字FuriganaMeanings1noundescendant; successorarchaicArchaic term for a descendant or successor, especially in a lineage or family line. Not used in modern Japanese; replaced by words like 子孫 or 後継者.古こ文ぶん書しょには「胤いん裔えい」という語ごが血ち筋すじを引ひく者ものを指さして使